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Real-time monitoring of volatile organic compounds using chemical ionization mass spectrometry

United States Patent

5,962,774
October 5, 1999
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
A system for on-line quantitative monitoring of volatile organic compounds (VOCs) includes pressure reduction means for carrying a gaseous sample from a first location to a measuring input location maintained at a low pressure, the system utilizing active feedback to keep both the vapor flow and pressure to a chemical ionization mode mass spectrometer constant. A multiple input manifold for VOC and gas distribution permits a combination of calibration gases or samples to be applied to the spectrometer.
Mowry; Curtis Dale (Albuquerque, NM), Thornberg; Steven Michael (Peralta, NM)
Sandia Corporation (Albuquerque, NM)
09/ 062,469
April 17, 1998
The United States Government has rights in this invention pursuant to Department of Energy Contract No. DE-AC04-94AL85000 with Sandia Corporation.